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USGS Daily Statistics for the Nation

The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 05554500 VERMILION RIVER AT PONTIAC, IL


Livingston County, Illinois
Hydrologic Unit Code 07130002
Latitude  40°52'40", Longitude  88°38'10" NAD27
Drainage area 579  square miles
Gage datum 619.45 feet above NGVD29
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00060, Discharge, cubic feet per second,
Day of
month
Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1942-10-01 -> 2020-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 618 410 545 773 1,010 709 436 152 113 127 201 338
2 507 427 565 778 999 697 367 108 127 147 207 391
3 421 414 541 762 843 655 335 111 124 184 232 376
4 472 387 637 775 710 583 320 166 94 229 218 429
5 554 485 771 734 664 566 323 201 68 185 200 387
6 556 503 782 760 671 586 324 181 73 136 187 347
7 489 490 686 742 678 580 331 159 106 117 159 321
8 473 431 691 677 729 577 299 156 104 111 139 362
9 494 429 741 710 785 588 376 140 134 113 125 348
10 473 464 835 717 799 592 462 111 156 113 137 300
11 462 457 934 715 849 635 493 112 161 115 185 307
12 425 451 917 865 941 613 504 94 122 113 198 439
13 443 453 825 874 980 642 523 79 100 107 206 468
14 480 494 855 847 1,080 677 517 66 173 123 232 389
15 501 460 886 858 1,050 633 502 107 280 129 252 365
16 431 417 857 838 928 623 401 175 248 131 259 362
17 341 470 806 820 852 617 307 132 175 196 255 338
18 297 566 843 777 848 589 339 96 132 233 273 312
19 286 579 836 788 825 627 430 104 134 214 360 264
20 347 617 809 798 735 636 344 165 118 168 353 251
21 368 752 788 781 650 682 284 218 91 139 297 258
22 369 884 748 794 616 810 277 153 90 131 249 364
23 379 936 722 886 618 770 301 114 126 166 259 403
24 448 839 718 851 601 667 278 117 154 206 280 383
25 458 719 678 867 601 614 240 107 155 195 288 443
26 410 602 638 897 715 579 218 95 157 174 288 479
27 382 603 604 918 749 542 199 104 135 149 342 472
28 377 582 678 924 713 504 187 117 119 132 408 542
29 360 340 809 849 727 504 198 98 103 123 398 631
30 355   826 864 690 484 176 97 116 149 336 669
31 385   798   675   209 101   202   671